mathsurgery - Equations formulae, identities and expressions year 8

All
• Explain and justify methods and conclusions
• Use letter symbols to represent unknown numbers or variables; know the meanings of the words term, expression and equation
• Understand that algebraic operations follow the rules of arithmetic
• Simplify linear algebraic expressions by collecting like terms; multiply a single term over a bracket (integer coefficients)
• Substitute positive integers into linear expressions

Most
• Use logical argument to establish the truth of a statement
• Manipulate algebraic expressions
• Recognise that letter symbols play different roles in equations, formulae and functions; know the meanings of the words formula and function
• Understand that algebraic operations, including the use of brackets, follow the rules of arithmetic; use index notation for small positive integer powers
• Simplify or transform linear expressions by collecting like terms; multiply a single term over a bracket
• Substitute integers into simple formulae

Some
• Generate fuller solutions by presenting a concise, reasoned argument using symbols, diagrams, graphs and related explanations
• Distinguish the different roles played by letter symbols in equations, identities, formulae and functions
• Use index notation for integer powers and simple instances of the index laws
• Simplify or transform algebraic expressions by taking out single-term common factors
• Substitute numbers into expressions and formulae
• Add simple algebraic fractions

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Equations formulae, identities and expressions year 8